Commit Graph

10 Commits

Author SHA1 Message Date
Carlos 671178c8c4 [shared-module/audioio/WaveFile.h] Change sample_rate from uint16_t to uint32_t so it matches the sample rate type parsed from the WAV header format, fix #1922 2019-06-04 21:31:30 -05:00
caternuson 46f1a0719e add channels and bits_per_sample to audioio.WaveFile 2018-10-31 18:08:10 -07:00
Scott Shawcroft 6da25c8893
Rename stop to stop_voice in case we want stop to stop everything later. 2018-10-09 13:28:00 -07:00
Scott Shawcroft 3c6812f2c1
Fix M0 math 2018-10-05 15:19:09 -07:00
Scott Shawcroft 8587d8edf0
Fix voice ending in the middle of a buffer. 2018-10-05 15:19:08 -07:00
Scott Shawcroft 76008ce304
Introduce audioio.Mixer which can mix multiple audio samples
to produce a single sample.

Only works with 16 bit samples on the M4.

Fixes #987
2018-10-05 15:12:23 -07:00
Scott Shawcroft de5a9d72dc
Compress all translated strings with Huffman coding.
This saves code space in builds which use link-time optimization.
The optimization drops the untranslated strings and replaces them
with a compressed_string_t struct. It can then be decompressed to
a c string.

Builds without LTO work as well but include both untranslated
strings and compressed strings.

This work could be expanded to include QSTRs and loaded strings if
a compress method is added to C. Its tracked in #531.
2018-08-16 17:40:57 -07:00
Scott Shawcroft 933add6cd8
Support internationalisation. 2018-08-07 14:58:57 -07:00
Dan Halbert e724bc1c4e Fix playing audio from SD card 2018-06-14 18:47:40 -04:00
Scott Shawcroft 28642ab10d Add audio output support!
This evolves the API from 2.x (and breaks it). Playback devices are now
separate from the samples themselves. This allows for greater playback
flexibility. Two sample sources are audioio.RawSample and audioio.WaveFile.
They can both be mono or stereo. They can be output to audioio.AudioOut or
audiobusio.I2SOut.

Internally, the dma tracking has changed from a TC counting block transfers
to an interrupt generated by the block event sent to the EVSYS. This reduces
the overhead of each DMA transfer so multiple can occure without using up TCs.

Fixes #652. Fixes #522. Huge progress on #263
2018-04-12 16:35:13 -07:00